I suspect if you asked, most people would say they hate gloaters. Those people who, fresh off some kind of apparent victory (or even success), proceed with endless self-congratulation and, even worse, demonization of their now 'defeated' opponent.
Unless, of course, the victor is on your team or you envision yourself on theirs. Then, we don't call it gloating.
Which gloater do you hate more—theirs or yours?
